It looks like a real tunic to me, but the photos arn't good enough to be sure. I agree the collar looks changed, but this could be a wartime modification as the collar colour changed from dark green to field gray in around 1940.

That's my line of thought Dean tunic stands or looks pretty good, can't tell a whole lot based on photo's Field modified to M-40 collar? I can't think of any other reason why that would be done. Maybe when he gets better photo's tunic experts will weigh in. Looks promising. timothy